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- [DOC] add alpha support for imagefilter's IMG_FILTER_COLORIZE

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This commit is contained in:
Pierre Joye 2007-09-11 21:03:48 +00:00
parent 336111e4e9
commit fd15282c77
3 changed files with 16 additions and 11 deletions
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1
NEWS
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@ -11,6 +11,7 @@ PHP NEWS
- Upgraded PCRE to version 7.3 (Nuno)
- Added optional parameter $provide_object to debug_backtrace(). (Sebastian)
- Added alpha support for imagefilter's IMG_FILTER_COLORIZE
- Fixed Bug #42596 (session.save_path MODE option does not work). (Ilia)
- Fixed bug #42590 (Make the engine recornize \v and \f escape sequences).

7
ext/gd/gd.c
View file

@ -5178,8 +5178,9 @@ static void php_image_filter_colorize(INTERNAL_FUNCTION_PARAMETERS)
zval *SIM;
gdImagePtr im_src;
long r,g,b,tmp;
long a = 0;
if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "rllll", &SIM, &tmp, &r, &g, &b) == FAILURE) {
if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "rllll|l", &SIM, &tmp, &r, &g, &b, &a) == FAILURE) {
RETURN_FALSE;
}
@ -5189,7 +5190,7 @@ static void php_image_filter_colorize(INTERNAL_FUNCTION_PARAMETERS)
RETURN_FALSE;
}
if (gdImageColor(im_src, (int) r, (int) g, (int) b) == 1) {
if (gdImageColor(im_src, (int) r, (int) g, (int) b, (int) a) == 1) {
RETURN_TRUE;
}
@ -5298,7 +5299,7 @@ PHP_FUNCTION(imagefilter)
php_image_filter_smooth
};
if (ZEND_NUM_ARGS() < 2 || ZEND_NUM_ARGS() > 5) {
if (ZEND_NUM_ARGS() < 2 || ZEND_NUM_ARGS() > 6) {
WRONG_PARAM_COUNT;
} else if (zend_parse_parameters(2 TSRMLS_CC, "rl", &tmp, &filtertype) == FAILURE) {
return;

19
ext/gd/libgd/gd.c
View file

@ -3807,15 +3807,14 @@ int gdImageContrast(gdImagePtr src, double contrast)
}
int gdImageColor(gdImagePtr src, int red, int green, int blue)
int gdImageColor(gdImagePtr src, const int red, const int green, const int blue, const int alpha)
{
int x, y;
int r,g,b,a;
int new_pxl, pxl;
typedef int (*FuncPtr)(gdImagePtr, int, int);
FuncPtr f;
if (src==NULL || (red<-255||red>255) || (green<-255||green>255) || (blue<-255||blue>255)) {
if (src == NULL) {
return 0;
}
@ -3823,6 +3822,8 @@ int gdImageColor(gdImagePtr src, int red, int green, int blue)
for (y=0; y<src->sy; ++y) {
for (x=0; x<src->sx; ++x) {
int r,g,b,a;
pxl = f(src, x, y);
r = gdImageRed(src, pxl);
g = gdImageGreen(src, pxl);
@ -3832,14 +3833,16 @@ int gdImageColor(gdImagePtr src, int red, int green, int blue)
r = r + red;
g = g + green;
b = b + blue;
a = a + alpha;
r = (r > 255)? 255 : ((r < 0)? 0:r);
g = (g > 255)? 255 : ((g < 0)? 0:g);
b = (b > 255)? 255 : ((b < 0)? 0:b);
r = (r > 255)? 255 : ((r < 0)? 0 : r);
g = (g > 255)? 255 : ((g < 0)? 0 : g);
b = (b > 255)? 255 : ((b < 0)? 0 : b);
a = (a > 127)? 127 : ((a < 0)? 0 : a);
new_pxl = gdImageColorAllocateAlpha(src, (int)r, (int)g, (int)b, a);
new_pxl = gdImageColorAllocateAlpha(src, r, g, b, a);
if (new_pxl == -1) {
new_pxl = gdImageColorClosestAlpha(src, (int)r, (int)g, (int)b, a);
new_pxl = gdImageColorClosestAlpha(src, r, g, b, a);
}
gdImageSetPixel (src, x, y, new_pxl);
}